D&C Yellow No. 10
D&C Yellow No. 10 suppliers and sourcing guide
D&C Yellow No. 10 is a water-soluble greenish-yellow dye, a mixture of the sodium salts of the mono- and disulfonic acids of 2-(2-quinolinyl)-1H-indene-1,3(2H)-dione. It is made by condensing quinaldine with phthalic anhydride and sulfonating the product with oleum. It is a certified color for drugs and cosmetics, not food, used in tablets and capsules, mouthwashes, shampoos, soaps and other liquid products.
- Category
- Colors
- Also known as
- Quinoline Yellow WS · CI 47005 · CAS 8004-92-0
- Facts checked
- November 2026
Forms and grades of d&c yellow no. 10
Suppliers sell different products under the same name. Specify the one you need.
Straight color powder
The water-soluble sodium salts at a stated total color, dissolved before use.
Aluminum lake
The dye laked onto alumina for tablet and capsule coatings and powders.
Liquid solution
Aqueous or glycol solutions at a stated dye percentage for liquid products.
Pre-mixed shades
Blends, often with blue colors for greens, each certified color from a certified lot.
What to check on the COA
Compare each result with your own specification when the lot arrives.
- FDA certification lot number
- Every batch of D&C Yellow No. 10 must carry an FDA certification lot number; check that the number on the COA, the certificate and the container match.
- Total color
- Pure dye content by spectrophotometry or titration against the 21 CFR part 74 minimum (not less than 85 percent); it sets how much color each kilogram delivers.
- Volatile matter and salts
- Volatile matter at 135 °C plus chlorides and sulfates (as sodium salts), which make up most of the non-dye portion of a straight color.
- Sulfonation profile and intermediates
- Monosulfonates (not less than 75 percent), disulfonates, unsulfonated dye and sulfonated quinaldines and phthalic acids by HPLC, against 21 CFR 74.1710.
- Heavy metals
- Lead, arsenic and mercury by ICP-MS or AAS, reported against the limits in the color additive regulation and the supplier specification.
- Shade and strength vs. standard
- Hue and color strength compared with the supplier's retained standard, by drawdown or spectrophotometer, to catch shade drift between lots.
Storage, lots and expiry
Storage and shelf life
Store in the original sealed containers in a cool, dry place away from light and heat; powders cake in humid rooms, and dust should be controlled because small amounts stain other products and equipment. Shelf life is set by the supplier, with total color and appearance retested once past the retest date. Keep each container's FDA certification lot number with the stock so it can be traced into finished batches.
Lots and expiry dates
Record the FDA certification lot number and total color of each lot of D&C Yellow No. 10, and adjust dosing when dye content differs from the previous lot. Compare shade against a retained standard in the finished product, since subsidiary-color and particle-size differences can shift hue.
Regulatory status
Facts from regulators and standards bodies, each linked to its source.
21 CFR 74.1710 permits D&C Yellow No. 10 for coloring drugs generally.
Source: ecfr.gov (opens in a new tab)21 CFR 74.2710 permits D&C Yellow No. 10 for coloring cosmetics generally.
Source: ecfr.gov (opens in a new tab)All batches of D&C Yellow No. 10 must be certified by FDA under 21 CFR part 80.
Source: ecfr.gov (opens in a new tab)21 CFR 74.1710 describes its manufacture by condensing quinaldine with phthalic anhydride and sulfonating with oleum.
Source: ecfr.gov (opens in a new tab)
This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
D&C Yellow No. 10 suppliers
Manufacturers and distributors whose own websites say they sell it.
We are checking d&c yellow no. 10 suppliers now
Every listing is checked against the supplier’s own website before it goes live, so this list fills in over the coming weeks. The specs and COA checklist above are ready today.
Sell d&c yellow no. 10? Request a listingFrequently asked questions
What forms of d&c yellow no. 10 can brands buy?
Common forms include straight color powder, aluminum lake, liquid solution and pre-mixed shades. Ask each supplier for the specification sheet of the exact grade they quote.
What should the COA for d&c yellow no. 10 include?
Expect fDA certification lot number, total color, volatile matter and salts, sulfonation profile and intermediates, heavy metals and shade and strength vs. standard, each with its method, specification and result for that lot.
How should d&c yellow no. 10 be stored?
Store in the original sealed containers in a cool, dry place away from light and heat; powders cake in humid rooms, and dust should be controlled because small amounts stain other products and equipment. Shelf life is set by the supplier, with total color and appearance retested once past the retest date. Keep each container's FDA certification lot number with the stock so it can be traced into finished batches.
What is the regulatory status of d&c yellow no. 10?
21 CFR 74.1710 permits D&C Yellow No. 10 for coloring drugs generally. 21 CFR 74.2710 permits D&C Yellow No. 10 for coloring cosmetics generally. All batches of D&C Yellow No. 10 must be certified by FDA under 21 CFR part 80. 21 CFR 74.1710 describes its manufacture by condensing quinaldine with phthalic anhydride and sulfonating with oleum.
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